CVE-2026-4030— Database Backup for WordPress <= 2.5.2 - Missing Authorization to Unauthenticated Arbitrary File Read and Deletion
Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| wpengine | Database Backup for WordPress | ≤ 2.5.2 | affected |
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I. Basic Information for CVE-2026-4030
Vulnerability Information
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Vulnerability Title
Database Backup for WordPress <= 2.5.2 - Missing Authorization to Unauthenticated Arbitrary File Read and Deletion
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Database Backup for WordPress plugin for WordPress is vulnerable to unauthorized arbitrary file read and deletion in all versions up to, and including, 2.5.2. This is due to the plugin not properly enforcing the return value of its authorization check combined with a user-controlled backup directory parameter. This makes it possible for unauthenticated attackers to read and delete arbitrary files on the server, leading to Sensitive Information Exposure and potential site takeover. Note: This vulnerability is only exploitable in WordPress Multisite environments where the deprecated is_site_admin() function exists.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制缺失
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| wpengine | Database Backup for WordPress | 0 ~ 2.5.2 | - |
II. Public POCs for CVE-2026-4030
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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Same Patch Batch · wpengine · 2026-05-14 · 3 CVEs total
| CVE-2026-4029 | 7.5 HIGH | Database Backup for WordPress <= 2.5.2 - Missing Authorization to Unauthenticated Database |
| CVE-2026-4031 | 7.5 HIGH | Database Backup for WordPress <= 2.5.2 - Missing Authorization to Unauthenticated Database |
IV. Related Vulnerabilities
Same product: Database Backup for WordPress
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V. Comments for CVE-2026-4030
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